pf: 0.5$ is standard but if this guy has high limp/call % I don't mind pumping it up and add 1BB to extract more value from him.

flop: Since you haven't included any stats it's going to hard to put him on a range here. how often did he limped? how often does he limp/call?
Did he 3bet flop before and how often? Is he aggressive?
These questions can help you in the future in similar situations.
In this spot since you are only 85BB deep, you are oop and you don't want to see any spade, king or ace 4bet/shove if fine.

I strongly recommend you including stats/reads on your future posts.
It can help us giving you better answers and it also will improve your game.